Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels
The lighting design of a road tunnel focuses on the setting of pavement luminance. As for the tunnel sidewall luminance, it simply follows the principle of no less than 60% of the pavement luminance. In fact, the sidewall is one of the important components of the tunnel lighting environment; however...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/10/4919 |
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| author | Xuefeng Chen Shouzhong Feng Jie Li Long Zhou Weixing Mao Hehua Zhu |
| author_facet | Xuefeng Chen Shouzhong Feng Jie Li Long Zhou Weixing Mao Hehua Zhu |
| author_sort | Xuefeng Chen |
| collection | DOAJ |
| description | The lighting design of a road tunnel focuses on the setting of pavement luminance. As for the tunnel sidewall luminance, it simply follows the principle of no less than 60% of the pavement luminance. In fact, the sidewall is one of the important components of the tunnel lighting environment; however, the impact of the improvement of sidewall brightness on the LED lighting environment in a tunnel has not attracted enough attention. In this study, the impact of the improvement of tunnel sidewall brightness on the lighting environment and visual characteristics of human eyes were analyzed based on the lighting experiments when the tunnel sidewalls were decorated with two different types of materials and illuminated by LED lamps with five different color temperatures. The test results show that the tunnel sidewall luminance will increase if the energy-storage and luminescent coating with high reflectance is decorated on tunnel sidewalls, and the pavement luminance increases with the increasing sidewall luminance. After the improvement of the sidewall and pavement luminance, the visible distance for a small object in the tunnel will increase to a certain extent. Furthermore, there is no discomfort for drivers during driving, and the changing of eye pupil diameter is relatively stable, which indicates that the increase in tunnel sidewall luminance has a positive effect on the visual performance of drivers. |
| first_indexed | 2024-03-10T03:24:49Z |
| format | Article |
| id | doaj.art-d1c38d820de8411b811d0be22eeb45fb |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T03:24:49Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-d1c38d820de8411b811d0be22eeb45fb2023-11-23T09:55:05ZengMDPI AGApplied Sciences2076-34172022-05-011210491910.3390/app12104919Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road TunnelsXuefeng Chen0Shouzhong Feng1Jie Li2Long Zhou3Weixing Mao4Hehua Zhu5Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaWuhan Guangyi Transportation Science and Technology Incorporated Company, Wuhan 430073, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaAnhui Zhongyi New Material Science and Technology Co., Ltd., Chuzhou 239500, ChinaDepartment of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, ChinaThe lighting design of a road tunnel focuses on the setting of pavement luminance. As for the tunnel sidewall luminance, it simply follows the principle of no less than 60% of the pavement luminance. In fact, the sidewall is one of the important components of the tunnel lighting environment; however, the impact of the improvement of sidewall brightness on the LED lighting environment in a tunnel has not attracted enough attention. In this study, the impact of the improvement of tunnel sidewall brightness on the lighting environment and visual characteristics of human eyes were analyzed based on the lighting experiments when the tunnel sidewalls were decorated with two different types of materials and illuminated by LED lamps with five different color temperatures. The test results show that the tunnel sidewall luminance will increase if the energy-storage and luminescent coating with high reflectance is decorated on tunnel sidewalls, and the pavement luminance increases with the increasing sidewall luminance. After the improvement of the sidewall and pavement luminance, the visible distance for a small object in the tunnel will increase to a certain extent. Furthermore, there is no discomfort for drivers during driving, and the changing of eye pupil diameter is relatively stable, which indicates that the increase in tunnel sidewall luminance has a positive effect on the visual performance of drivers.https://www.mdpi.com/2076-3417/12/10/4919tunnel lightingsidewall brightnesslighting environmentvisual characteristicsexperiment |
| spellingShingle | Xuefeng Chen Shouzhong Feng Jie Li Long Zhou Weixing Mao Hehua Zhu Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels Applied Sciences tunnel lighting sidewall brightness lighting environment visual characteristics experiment |
| title | Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels |
| title_full | Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels |
| title_fullStr | Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels |
| title_full_unstemmed | Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels |
| title_short | Effects of Sidewall Brightness on LED Lighting Environment and Visual Performance in Road Tunnels |
| title_sort | effects of sidewall brightness on led lighting environment and visual performance in road tunnels |
| topic | tunnel lighting sidewall brightness lighting environment visual characteristics experiment |
| url | https://www.mdpi.com/2076-3417/12/10/4919 |
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